Bash function to view the current repository/branch on github. Should work fine with multiple remotes.

git_hub.sh

# Opens the current branch on github.com, if possible.
# Would call this "github" but it conflicts with github's own CLI app to open their desktop app.
git_hub() {
  BRANCH=`git rev-parse --symbolic-full-name --abbrev-ref @{u} 2>/dev/null`
  if [[ $? != 0 ]]; then
    echo "Not currently in a git repository"
    return
  fi
  if [[ -z $BRANCH ]]; then
    echo "Can't determine current git branch name"
    return
  fi
  IFS_STORE="$IFS"
  IFS=$'\n'
  FOUND=0
  for REMOTE in `git remote`; do
      if [[ $BRANCH == "$REMOTE/"* ]]; then
        FOUND=1
        SHORT_BRANCH=${BRANCH#$REMOTE/}
        GITHUB_REPO=`git remote show "$REMOTE" | grep 'Fetch URL' | awk -F: '{ print $3 }' | sed -e 's,.git$,,'`
        if [[ $? != 0 ]]; then
          echo "Error loading github project info"
          break
        fi
        if [[ -z $BRANCH ]]; then
          echo "Couldn't determine github project info"
          break
        fi
        # Check for 'master' Disabled because I need support odd repositories that don't use "master" as the default
        # TODO DEF_BRANCH=`git br -a | grep HEAD | ....`
        #if [[ $SHORT_BRANCH == 'master' ]]; then
        #  URL="https://github.com/$GITHUB_REPO/"
        #else
          URL="https://github.com/$GITHUB_REPO/tree/$SHORT_BRANCH"
        #fi
        echo "$URL"
        if [[ `uname` == 'Darwin' ]]; then
          open "$URL"
        elif `which xdg-open >/dev/null`; then
          xdg-open "$URL"
        else
          echo "Couldn't find URL opener"
        fi
        break
      fi
  done
  if [[ $FOUND == 0 ]]; then
    echo "This branch does not appear to be tracking a remote."
  fi
  IFS="$IFS_STORE"
}